Who is to Blame for the Recession?

Is it the government, Wall Street, or the public? Let’s start with the premise that the cause of recession is the burst of the real-estate bubble. Clearly Congress was responsible for the housing boom because it pressured or influenced Fannie Mae and Freddie Mac to purchase low-quality loans as an attempt to promote home ownership for everyone including the poor. Congress continued to pour hundreds of billions of taxpayer dollars into housing subsidies even in the midst of a housing boom.
The Federal Reserve, controlled by the federal government, fueled the boom further by excessive money supply to the financial institutions that originated hundreds of billions of dollars in bad loans and invented Credit Default Swaps (CDS) designed to shift the risk of default to a third-party, as this shifted risk did not count against their regulatory capital requirements. Nevertheless, credit default swaps did not directly cause this problem but may have exasperated it as CDS allowed banks to lend more because of lower capital requirements . The Federal Reserve then significantly contracted the money supply to bring about the financial crisis that has widely dispersed throughout the economy. The collapse in the financial institutions was exacerbated by government interference with the aid of people like Henry Paulson and others who think they are smarter than their predecessors to rescue the financial crisis.
Should we trust the government who caused this mess to fix the problem? Clearly, they should. However, the fiscal stimulus proposed by the Obama Administration in the form of tax cuts or infrastructure spending is highly questionable as people may spend their money on paying down debts or buying imports while the economic impact of infrastructure spending may take years.
So, who is to blame? I say we are all to blame. The government is the blame for its monetary policy. Wall street is the blame for its risky lending practices and questionable financial derivatives (such as credit swaps). We are to blame for electing the politicians who caused this mess.